Set top box



FIG. 1 is a perspective top, left side view of the set top box wherein the power switch illustrated in broken lines does not form any part of the design;

FIG. 2 is a front view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a rear view thereof wherein the connectors illustrated in broken lines do not form any part of the design;

FIG. 5 is a right view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof. 

CLAIM I claim the ornamental design for a set top box, as shown and described. 